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User’s Guide

BD57121MUF-EVK-001

© 2019 ROHM Co., Ltd.

No. 61UG042E Rev.001

JAN.2019

Circuit Diagram 1

Figure 5. BD57121MUF-EVK-001 Circuit Diagram (1/2)

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Summary of Contents for BD57121MUF-M

Page 1: ...WPC Qi compliant Wireless Power Series NFC compatible Wireless Power Transmitter for Automotive Applications BD57121MUF M Evaluation Board BD57121MUF EVK 001...

Page 2: ...tal contact or even bringing your hand close to the board may result in discharge and lead to severe injury or death Therefore DO NOT touch the board with your bare hands or bring them too close to th...

Page 3: ...5 W output in receiver Detection and identification of NFC TypeA B F and V are possible Features Compliance to WPC Qi ver1 2 4 Support of Multiple coils to increase charging area Qi MP A13 coil type P...

Page 4: ...e Current Sensing Power BD57015GWL Data Data Half Full Bridge Demodulator Tx Controller Voltage Current Sensing MCU BD57121MUF M NFC Reader Writer NFC Card TAG Data Data NFC listener Figure 2 System c...

Page 5: ...ontrol a pre driver for driving the inverter bridge an analog sensing circuit and a selector circuit for multiple coils ST25R3914 is a high sensitivity and high power NFC HF analog front end that supp...

Page 6: ...side if necessary 5 DC voltage meter 6 NFC card tag 2 Connecting the equipment 1 Set the DC power supply to 12V and turn off the power supply output 2 Confirm that SW1 on the EVK is on the OFF side 3...

Page 7: ...tection 3 OFF OFF ON ON During Error detection 4 OFF OFF Blinking ON 1 BPP Baseline Power Profile Capable wireless power supply up to 5W 2 EPP Extended Power Profile Capable wireless power supply up t...

Page 8: ...6 13 User s Guide BD57121MUF EVK 001 2019 ROHM Co Ltd No 61UG042E Rev 001 JAN 2019 Circuit Diagram 1 Figure 5 BD57121MUF EVK 001 Circuit Diagram 1 2...

Page 9: ...7 13 User s Guide BD57121MUF EVK 001 2019 ROHM Co Ltd No 61UG042E Rev 001 JAN 2019 Circuit Diagram 2 Figure 6 BD57121MUF EVK 001 Circuit Diagram 2 2...

Page 10: ...A 3 3 k Resistor Chip 1 16W 1005 MCR01MZPD3301 ROHM 3 RPUVAR R21 R22 R23 RIN3 R74 R75 20 k Resistor Chip 1 16W 1005 MCR01MZPD2002 ROHM 7 R24 R25 R26 5 1 k Resistor Chip 1 16W 1005 MCR01MZPD5101 ROHM 3...

Page 11: ...81 C82 0 47 F Capacitor Chip 10V 1005 GRT155R71A474ME01 MURATA 2 COSC11 COSC12 10 pF Capacitor Chip 100V 1005 GRT1555C2A100JA02D MURATA 2 COSC21 COSC22 3 3 pF Capacitor Chip 100V 1005 GRT1555C2A3R3CA0...

Page 12: ...User s Guide BD57121MUF EVK 001 2019 ROHM Co Ltd No 61UG042E Rev 001 JAN 2019 Layout 1 Figure 7 Top silk screen layout Top View Figure 8 Bottom silk screen layout Top View Figure 9 TOP Layer layout To...

Page 13: ...ser s Guide BD57121MUF EVK 001 2019 ROHM Co Ltd No 61UG042E Rev 001 JAN 2019 Layout 2 Figure 10 Middle Layer 1 layout Top View Figure 11 Middle Layer 2 layout Top View Figure 12 Bottom Layer layout To...

Page 14: ...data Figure 13 System Efficiency vs POUT EPP Rx BD57015GWL EVK 002 ROHM 12V output Figure 14 System Efficiency vs POUT BPP Rx BD57011AGWL ROHM 5V output 0 10 20 30 40 50 60 70 80 0 5 10 15 System Eff...

Page 15: ...13 13 2019 ROHM Co Ltd No 61UG042E Rev 001 JAN 2019 User s Guide BD57121MUF EVK 001 Revision history date Revision Changes 16 Jan 2019 001 New release...

Page 16: ...hnical information The Products specified in this document are not designed to be radiation tolerant For use of our Products in applications requiring a high degree of reliability as exemplified below...

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